Materials · Monel
Monel K500 fasteners
HAGUE FASTENERS makes Monel K500 fasteners to order: high strength bolts, studs, nuts and machined parts in age-hardened Monel K500 (UNS N05500), made to your drawing in Willenhall for seawater, subsea and offshore service.
N05500
Also Alloy K500 and W.Nr 2.4375
965 MPa
Minimum tensile strength, age hardened
690 MPa
Minimum yield strength, age hardened
1 to 500
Prototypes to batches of several hundred
About the alloy
Monel corrosion resistance with high strength
HAGUE FASTENERS makes Monel K500 fasteners in the UK for marine, subsea and oil and gas equipment. K500 is an age-hardenable nickel-copper alloy that combines the corrosion resistance of Alloy 400 with high strength, corrosion fatigue resistance and erosion resistance.
Typical uses include pump shafts, impellers, propeller shafts, valve components for ships and offshore drilling towers, bolting, oil well drill collars and instrumentation for oil and gas production. Its high strength and low corrosion rates in high-velocity seawater make it well suited to marine centrifugal pumps.
At a glance
- Age-hardenable nickel-copper alloy
- Aluminium and titanium for precipitation hardening
- Low corrosion rates in high-velocity seawater
- Listed in NACE MR-01-75
Composition
Monel K500 chemical composition
Percentage by weight.
| Element | Min % | Max % |
|---|---|---|
| Nickel (Ni) | 63.00 | – |
| Carbon (C) | – | 0.18 |
| Silicon (Si) | – | 0.50 |
| Copper (Cu) | 27.00 | 33.00 |
| Manganese (Mn) | – | 1.50 |
| Iron (Fe) | – | 2.00 |
| Sulphur (S) | – | 0.010 |
| Titanium (Ti) | 0.35 | 0.85 |
| Aluminium (Al) | 2.30 | 3.15 |
Properties
Mechanical properties (age hardened)
Minimum values in the age hardened condition.
| Property | Value |
|---|---|
| Tensile strength | 965 MPa min. |
| Yield strength (0.2% offset) | 690 MPa min. |
| Elongation in 2 in (50 mm) or 4D | 20% min. |
| Hardness | 265HB min. |
This data is for general information only and may change without notice. HAGUE FASTENERS LIMITED believes it to be accurate but gives no warranty as to its accuracy or completeness and accepts no liability for its use. Actual properties may vary, and nothing here guarantees suitability for a particular use.
Equivalents and applications
Monel K500 equivalents and typical uses
Alternative designations
Alloy K500, UNS N05500, W.Nr 2.4375, NACE MR-01-75, BS 3075 NA18, BS 3076 NA18, ASTM B865, DIN 17752, DIN 17753, DIN 17754, QQ-N-286, SAE AMS 4676, ASME Code Case 1192, ISO 9723, ISO 9724, ISO 9725.
Typical applications
- Subsea and offshore bolting
- Pump shafts, impellers and propeller shafts
- Valve components for ships and drilling platforms
- Oil well drill collars and instrumentation
What we make
Fasteners we make in Monel K500
Certification and testing
Certified, traceable and tested
Bar comes from approved UK, EU or US mills, with heat numbers carried through to release. Testing is by independent UKAS-accredited laboratories, with EN 10204 3.1 or 3.2 certificates as required. See quality and testing.
- Mill certificates and heat traceability
- PMI and chemical analysis
- Age hardening by approved partners, with furnace charts
- Laser-marked heat codes or part numbers
Questions
Frequently asked questions
What is the equivalent of Monel K500?
Monel K500 is UNS N05500, W.Nr 2.4375 and BS 3076 NA18, and is supplied to ASTM B865 and QQ-N-286.
Why use Monel K500 fasteners instead of Monel 400?
Monel K500 fasteners are age hardened to a minimum tensile strength of 965 MPa, far stronger than Monel 400, with similar corrosion resistance.
Are Monel K500 bolts suitable for subsea use?
Yes. K500 is widely used for subsea and offshore bolting because of its strength and low corrosion rates in seawater. See oil and gas.
Can you make Monel K500 bolts to ASTM B865?
Yes. We make K500 studs, bolts and nuts from bar to ASTM B865 or QQ-N-286, age hardened and tested to your specification.
Monel K500 enquiry?
Send us your drawing or specification
Tell us the sizes, quantity and documentation you need, and we will reply quickly.